... It contains 2 (1 for each polarization) by 4 separate filters that are switch able via the computer. filter 1 is a motor driven tuneable filter covering 1000 to 2000 Mhz with a 2% bandwidth. filter 2 is a ??? . ... An hp34907 dac generates a voltage that corresponds to the requested frequency. ... It steps the filter from 1000 to 2000 Mhz in 25 Mhz steps. ... You now have 41 requested voltages and measured frequencies going from 1000 to 2000 Mhz. ... 20 Mhz) when fit over the 1000 to 2000 Mhz range....

Еще в разделе: (Показать все результаты (>5382) - www.naic.edu/ )

• http://www.naic.edu/~phil/mbeam/calibration/01apr05_oh_performance.html
• Lidar National Astronomy and Ionosphere Center (Arecibo Observatory)
• National Astronomy and Ionosphere Center (Arecibo Observatory)

Еще в разделе: (Показать все результаты (>228) - www.asc.rssi.ru/ )

Еще в разделе: (Показать все результаты (>3868) - www.jsc.nasa.gov/ )

• Astronaut Bio: Michael Lopez-Alegria (11/2014)
• Astronaut Bio: Robert L. Stewart
• Astronaut Bio: Peter J. K. Wisoff 11/2001

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... Chirp ionosonde main technical characteristics . ... Linear frequency modulated continuous signals sounding method is relatively simple and has wide application in various special-purpose systems. ... Chirp signals which are applying for ionosphere channel diagnostics usually have10KHz/s -- 1MHz/s. We must point out that under modulation speed increasing there is an increase in noise suppression and resolution power. ...

Еще в разделе: (Показать все результаты (>37) - rp.iszf.irk.ru/ )

• East Siberian Center for the Earth's Ionosphere Research. Incoherent Scatter
• East Siberian Center of Earth Ionosphere Research. IS radar Receivers Hall.
• East Siberian Center for the Earth's Ionosphere Research. Maximum usable

... НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Кружок ?Олимпиады и математика? ... Московская математическая олимпиада . Заочный математический конкурс . ... Устные математические олимпиады . Олимпиады по программированию . Математический праздник . Математические регаты . ... Математические бои . Олимпиада по геометрии им. И.Ф.Шарыгина . ... Программа ?Math in Moscow? Научные конкурсы . Творческий конкурс . ... График олимпиад . ... XXVII Математический праздник . ...

Еще в разделе: (Показать все результаты (>746) - www.mccme.ru/ )

• Moscow Center for Continuous Mathematical Education - Independent University of

Peremennye Zvezdy", . ... Received: 9.05.2013; accepted: 29.05.2014 . ... Max . ... Independently discovered by Palaversa et al. (2013), listed as LINEAR 2681145. ... Independently discovered by Palaversa et al. (2013), listed as LINEAR 2686769. ... Independently discovered by Palaversa et al. (2013), listed as LINEAR 2672279. ... Independently discovered by Palaversa et al. (2013), listed as LINEAR 2992494. ... Independently discovered by Palaversa et al. (2013), listed as LINEAR 2997346. ...

Еще в разделе: (Показать все результаты (>94969) - www.astronet.ru/ )

... Installed filters (User selectable): R, I, B, Red + ND2, Clear, U, V (all filters are Johnson-Cousins) . ... For a plot of all filters, click here . 0 - Bessell R . ... The only filter requiring a focus offset is the ND2 + R filter which will be measured on the sky. ... The red filter attached to the ND2 in position 6 is not the same as the Bessell R. Number 6 is an RG610 red glass filter ( Rolyn 65.1355 ) for the 610 nm cut-on. ... Focus . ... Guider Mechanical Controller (filter and focus) . ...

Еще в разделе: (Показать все результаты (>749) - www.apo.nmsu.edu/ )

• Hodge on/off H-alpha Narrow Band Filters
• APO - narrow band filters
• ARC 3.5m | GFP

... Институт прикладной математики им. М.В.Келдыша . БАЛЛИСТИЧЕСКИЙ ЦЕНТР . О Центре . ... Баллистический Центр Института прикладной математики им. М.В.Келдыша РАН . Баллистический центр (БЦ) ИПМ им. М.В. Келдыша создан по предложению С.П. Королева и М.В. Келдыша в 1965 году. На него были возложены работы по баллистико-навигационному обеспечению (БНО) управления полетом пилотируемых кораблей и автоматических космических аппаратов научного и народно-хозяйственного назначения. ...

Еще в разделе: (Показать все результаты (>8) - www.kiam1.rssi.ru/ )

An improved correlator for ALMA has been proposed by an European consortium including Astron (NL), Bordeaux University (FR), IRAM (FR) and Arcetri. ... The work in Arcetri has focused on the efficent design of a digital receiver, that exploits the peculiarities of the astronomical signal, i.e. the extremely coarse quantization and the stochastic nature of the input signal. ... A complex mixer followed by a two stage bandpass filter. ... Phase effects in a hybrid correlator . ...

Еще в разделе: (Показать все результаты (>8777) - www.arcetri.astro.it/ )

• Arcetri designs innovative superconductor microwave filters for the Sardinia
• First Images and Spectra from ISAAC on UT1 (ESO Press Release 19/98)
• FIRPO Help 1

Feed cabin Nr. ... Fig. ... This allows to realize the sensitivity at frequency ranges 4.8, 11.2 and 30.0 GHz of 5, 7 and 12 mK by double beam switching mode and by the integration time of the output filter 1s. Input waveguide paths were very long and had big losses. ... The focal line of the feed cabin Nr. ... Data Acquisition and Control System . The Data acquisition system of the feed cabin Nr 2 is based on the new measurement ER-DAS system (Embedded Radiometric Data Acquisition System). ...

Еще в разделе: (Показать все результаты (>1121) - jet.sao.ru/ )

• Cosmological Gene project
• SCORPIO: Direct images

... The gyro rate data minimizes the effects of noise from the star measurements, and the long-term accuracy of the star data provides a high-fidelity estimate of the gyro bias drift. ... The filter estimates 3-axis error in current attitude estimate and 3-axis gyroscope drift rate, resulting in six estimated quantities referred to as the filter "state." ... In the upper left graph, the solid line shows the actual pitch estimate error for a 500 second nominal dither observation. ...

Еще в разделе: (Показать все результаты (>1817) - www.adass.org/ )

• Kalman Filtering in Chandra Aspect Determination
• Improvements in Filter Design for Removing Galactic ``Cirrus'' from IRAS Images
• Application of a Kalman Filter at UKIRT

Due to technical issues, on September 11, 1998 the radiolink was switched to 465 MHz channel. Data acquisition is presently performed only by SRC "PLANETA", Data Receiving Center in Obninsk and Western Siberia Data Receiving Center in Nobosibirsk . For conditions of obtaining data from RESURS-01 N3 please contact SRC "PLANETA". ... Registration of full data stream (61.44 Mbit/s) is performed only by Data Receiving Center, SRC "PLANETA", Obninsk. ...

Еще в разделе: (Показать все результаты (>16) - sputnik.infospace.ru/ )

• PLANETA home page

ATNF ATUC Memorandum To: ATUC From: John Reynolds Date: 29 November 2004 Subject Parkes 50cm RFI Summary The Parkes 10/50cm receiver system installed in October 2003 continues to function well. The main limitation at present is Radio Frequency Interference (RFI) caused by Television transmissions in the 50cm band, both within and outside the nominal observing band (648-712MHz). The RFI, if unmitigated, threatens to make useful observing in this band very difficult. ...

Еще в разделе: (Показать все результаты (>22489) - www.atnf.csiro.au/ )

• http://www.atnf.csiro.au/management/atuc/2004jun/docs/3.3_Tid_report_jun04.doc
• http://www.atnf.csiro.au/management/atuc/2007may/docs/3_TechDev.pdf
• Pre- and Post-Correlation filters

... BOM2 and the basic block of solar limbograph including pointing and control systems ? ... Fine tracking platform (FTP) for Sun tracking by the sight axis of the limbograph; . ... Tracking system frequency ? ... Controller of the control system and solar fine tracking of the sight axis of the limbograph; . ... The basic relative construction of the elements and instrumental blocks of the "Astrometria" space experiment is shown on the block diagram of units within the complex of SL-200 solar...

Еще в разделе: (Показать все результаты (>332) - www.gao.spb.ru/ )

• PULK GNSS station
• Pulkovo EOP and Reference Systems Analysis Center (PERSAC)
• Pulkovo VLBI Analysis Center

... Astronomy in Ukraine Past, Present, and Future (MAO-2014) . July 17, 2014, Kyiv, Ukraine . ... of the Main Astronomical Observatory of the National Academy of Sciences of Ukraine . ... The Conference MAO-2014 is devoted to the 70th anniversary of the Main Astronomical Observatory of the National Academy of Sciences of Ukraine (MAO NASU). ... The Conference will be held at the MAO NASU, Kyiv, Ukraine. ... Main Astronomical Observatory of NASU, Kyiv, Ukraine . ... Main Astronomical Observatory . ...

Еще в разделе: (Показать все результаты (>1269) - www.mao.kiev.ua/ )

• Optical systems and devices

... Report on Cosmic Call 1999 . ... Cosmic Call Sessions . ... This Report outlines methodology, hard- and software, which were developed to transmit first public Interstellar messages from Evpatoria Deep Space Center (EDSC), and describes four Cosmic Call Sessions, which were fulfilled in EDSC on May 24 and June 30 - July 1, 1999. ... Each Cosmic Call consists of two parts. ... Dutil Message, . ... The software for gathering all messages and creating the Cosmic Call stream, was written on C language. ...

Еще в разделе: (Показать все результаты (>653) - www.cplire.ru/ )

Target: Horsehead Nebula or Barnard 33 Date: 2012-10-09 Time: 16:53 Telescope: CDK20S Camera: Apogee U16 Filters: UBVRI Exposure time: 100 seconds each filter Observer: Rhodes Hart Processing: John Kielkopf Colors at the center of the field are approximately correct for visual response. The images are not flat fielded, and the vignetting changes the color balance progressively away from the center.

Еще в разделе: (Показать все результаты (>884) - www.astro.louisville.edu/ )

• http://www.astro.louisville.edu/shared_skies/archive/select/messier/m110/20121121/log.txt
• http://www.astro.louisville.edu/shared_skies/archive/select/ngc/ngc6888_crescent/20121121/log.txt
• http://www.astro.louisville.edu/shared_skies/archive/select/ngc/ngc1514/20121109/log.txt

... The ROSAT Consortium (the Max-Planck-Institut fuer extraterrestrische Physik, the Goddard Space Flight Center, the Smithsonian Astrophysical Observatory, Leicester University, and the Astrophysikalisches Institut Potsdam) announces the release of the completed source catalogs of all ROSAT pointed observations. ... Detailed information about the catalog and methods of access to the catalog and data products can be obtained from the ROSAT Results Archive web pages in Germany, in the US, and in the UK:...

Еще в разделе: (Показать все результаты (>2656) - hea-www.harvard.edu/ )

• Spatial Region Boundaries
• High Energy Astrophysics
• mini-Workshop on Solar Statistics

National Space Agency of Ukraine and . ... The Second International Meeting on WARNING Mission . ... Space Research Institute of Ukrainian National Academy of Sciences - National Space Agency, . ... The Head of Scientific committee of the Project “Warning” is DR V.G.Bar`yahtar, Academitian of Ukrainian National Academy of Sciences. ... Lviv Center Space Research Institute of Ukrainian National Academy of Sciences, . ... National Space Agency of Ukraine, Bozhenka St. 11, 252022 Kyiv-22, Ukraine. ...

Еще в разделе: (Показать все результаты (>111) - space.univ.kiev.ua/ )

• MISSION WARNING: The Second International Meeting : Protocol
• MISSION WARNING: The Second International Meeting

USSR Venus Orbiters . ... Venera 15 and Venera 16 were a two-spacecraft mission designed to use 8-centimeter (3-inch) band, side-looking radar mappers to study the surface properties of Venus . ... Each spacecraft consisted of a synthetic aperture radar (SAR) and a radio altimeter. ... The Venera 15 and 16 synthetic aperture radar (SAR) systems were identical, and were used to map the surface of Venus at a resolution of 1 to 2 kilometers (.6 to 1.2 miles) over a period of 8 months. ...

Еще в разделе: (Показать все результаты (>992) - www.iki.rssi.ru/ )

• Environment Monitoring Information Systems
• The Principle of the Rocket
• Mauricio Peredo